20.500.12556/DKUM-66170 Omejitev širine razpok v mladem betonu zaradi vsiljenih vplivov Control of cracking in an early age concrete due to the inner restraint Magistrsko delo obravnava problematiko omejitve širine razpok v mladem betonu, ki se pojavijo zaradi učinkov vsiljenih vplivov. Opisane so vrste razpok in vzroki za njihov pojav, razložena sta proces pojava razpok v armiranobetonskih elementih in izpeljava enačb potrebnih za določitev računske širine razpok ter potrebne površine prereza armature za omejitev njihove širine na predpisane vrednosti. Prikazano je mejno stanje razpok po Evrokodu 2 in FIB Model Code-u 2010. Izvedena je analiza vsiljenih vplivov in njihovih učinkov na mladi beton. Na podlagi reprezentativnih primerov konstrukcij, ki pokrivajo večino v praksi nastalih problemov, je prikazan postopek določitve vsiljenih vplivov. Poznavanje vsiljenih napetosti nam omogoča, da ustrezno izvedemo dimenzioniranje armature za omejitev širine razpok v mladem betonu. Master’s thesis deals with the issue of limiting the crack width in an early age concrete due to the inner restraint. At first, crack types and causes for their occur are described, followed by an explanation of the crack appearing process in the reinforced concrete elements. Next, the derivation of equations needed to determine the calculation of crack width is presented and cross-sectional area of the reinforcement steel required to limit the crack width based on prescribed values is calculated. Further, the principles of the cracking limit state according to Eurocode 2 and Model Code 2010 are displayed. Finally, an analysis of indirect actions and their effect on the young concrete is given. Based on representative examples, which cover most of the practical issues, it is shown how to determine the impact of restraints. By knowing restraint stresses, we can properly design the reinforcement needed to limit the crack width in the young concrete. razpoke omejitev širine razpok faza tvorjenja razpok faza stabilizacije razpok vsiljeni vplivi vsiljene napetosti hidratacijska toplota odvajanje hidratacijske toplote masivni beton armirani beton cracks limitation of crack width crack formation stage stabilized cracking stage indirect actions restraint stress hydration heat drain of hydration heat mass concrete reinforced concrete true true false [A. Avguštin] Slovenski jezik Angleški jezik Magistrsko delo/naloga 2017-06-13 18:01:08 2017-06-29 09:27:59 2022-07-10 03:06:39 2019-07-11 15:42:06 2017 0 Maribor 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 666.97.015.82:691.328.5(043.2) 20765718 URN:SI:UM:DK:RATY1THK MAG_Avgustin_Ales_2017.pdf MAG_Avgustin_Ales_2017.pdf 1 AD70FE9341296CE1DE406A39E523711F c91fb91d3bb30e1a8d316fadee737cef73dd5dee216269c1287adb63ac40182f 50e1bab7-7c0e-11eb-bb7a-00155d0001ca https://dk.um.si/Dokument.php?lang=slv&id=113283 Fakulteta za gradbeništvo, prometno inženirstvo in arhitekturo 0 0 0